class A {

    float computer(float x,float y) {

       return x+y;

    }

    public int g(int x,int y) {

       return x+y;

    }

}

class B extends A {

    float computer (float x,float y,double z) {

       return x-y;

    }

}

public class Example5_5 {

    public static void main(String args[]) {

      B b=new B();

      double result=b.computer(8,9);    //b调用重写的方法

      System.out.println(result);  

      int m=b.g(12,8);                 //b调用继承的方法

      System.out.println(m);      

    } 

}
